Mhm5 – BEI Sensors MHM5 Absolute Hollow Shaft Encoder User Manual
Page 2
MHM5
CANOPEN ABSOLUTE MULTI-TURN ENCODER, MHM510-CANO
RANGE
ELECTRICAL DATA
Interface
ISO 11898
Power consumption
max 2,5W
Transmission rate
Max 1 MBauds
Step Frequency LSB
800 kHz
Device addressing
by rotary switches
Accuracy
+ ½ LSB
Power supply
10 – 30Vdc
EMC
EN 61000-6-4 EN 61000-6-2
Current consumption
max 100mA (24Vdc)
Electrical lifetime
> 10
5
h
TRANSMISSION MODES
POLLED Mode
By a remote-transmission-request telegram the connected host calls for the current process value. The
absolute rotary encoder reads the current position value, calculates eventually set-parameters and sends
back the obtained process value by the same identifier
CYCLIC Mode
The absolute rotary encoder transmits cyclically - without being called by the host - the current process
value. The cycle time can be programmed in milliseconds for values between 1 ms and 65536 ms
SYNC Mode
After receiving a sync telegram by the host, the absolute rotary encoder answers with the current process
value. If more than one node number (encoder) shall answer after receiving a sync telegram, the answer
telegrams of the nodes will be received by the host in order of their node numbers. The programming of an
offset-time is not necessary. If a node should not answer after each sync telegram on the CAN network, the
parameter sync counter can be programmed to skip a certain number of sync telegrams before answering
again
PROGRAMMABLE PARAMETERS
Operating
Parameters
This parameter determines the counting direction, in which the output code increases or decreases. As an
important operating parameter the code sequence (complement) can be programmed
Resolution per turn
Value between 1 and 8192 can be programmed
Total resolution
‘’Max range’’
This parameter is used to program the desired number of measuring units over the total measuring range.
This value may not exceed the total resolution of the absolute rotary encoder.
Preset Value
The preset value is the desired position value, which should be reached at a certain physical position of the
axis
Limit Switch,
Min. and Max
Two position values can be programmed as limit switches. By reaching these values one bit of the 32 bit
process value is set to high level
Cam
One free programmable cam can be set in the total measuring range
INSTALLATION
The rotary encoder is connected by two or three cables depending on whether the power supply is
integrated into the bus cable or connected separately. If the power supply is integrated into the bus
cable, one of the cable glands can be fitted
with a plug. The cable glands are suitable for cable diameters from 5.5 up to 9 mm
CONFIGURATION
The setting of the node number is achieved by 2 turn-switches in the connection cap. Possible
addresses lie between 0 and 89 whereby every address can only be used once. Inside the encoder
the defined address is increased by one. The connection cap can easily be opened for installation
by removing the two cap screws
A termination resistor is integrated in the connection cap. The resistor must be switched on if the
encoder is connected at the end or at the beginning of the bus
BEI Sensors SAS
Espace Européen de l’Entreprise
9, rue de Copenhague
B.P. 70044 Schiltigheim
F 67013 Strasbourg Cedex
Tél
: +33 (0)3 88 20 80 80
Fax
: +33 (0)3 88 20 87 87
Web :
www.beisensors.com
ORDERING REFERENCE
(Contact the factory for special versions ex:electronics, special flanges, connections…)
MHM5
CA
A1
B
12
13
C
10
0
H3P
Absolute
multi turn
encoder
CANopen Version
Code :
Binary
Number of
turns
2
12
(4 096)
Resolution :
2
13
(8 192)
Clamp
flange
Shaft
diameter :
10mm
Without
mechanical
option
Connection
Cap
Note:
The ‘’H3P’’ terminal box version is shorter than the ‘’0CC’’ one.
Changes possible without further notice - Version 100629